Log handling boom



Jan. 27, 1953 c. H. SPARKS ET AL 2,625,715

LOG HANDLING" BOOM Filed June a, 1951 2 SHEETS-S1-1EET 1 INVENTOR.CHARLES H. SPAR KS g ANK C.TURNER AT TOR NEYfz Jan. 27, 1953 c. H.SPARKS ET AL.

LOG mmpum BOOM.

2 Sl-IEETS-SI-IEET 2 Filed June 8, 1951 INVENTOR. CHARLES H. S PAR KS C.TURNER Big RANK .ATTOR NEYS Patented Jan. 27, 1953 LG HANDLING BOOMCharles Hamilton Sparks and Frank C. Turner,

Eugene, Ore'g.

Application June 8, 1951, Serial No. 230,531

2 Claims.

This invention relates to booms and is particularly adapted to be usedin connection with portable boom or shovel operating machines in thehandling of logs, poles and the like.

The primary object of our new and improved boom is to provide a loghandling boom that will lift logs in a horizontal plane and at an angleto the center line of the boom.

In the loading of logs on trucks and the like, it is desirable to beable to lift the log by heeling one end to the boom and at variousangles to the center line of the boom so that the log may be loaded ontrucks adjacent the boom operating machine.

As it is today, in order to load logs, the log has to be lifted andheeled against the boom in line with the boom, therefore the truck hasto be backed directly towards the boom operating machine, but with ournew and improved boom the truck may be backed along side of the boomoperating machine and the log loaded on the bunks of the truck, due tothe ability to lift the log heeling the same under the boom at an angleto the center line of the boom.

Another object of our invention is to design a boom whose outer end ison a relatively horizontal plane so that the butt of the log can beheeled under the boom with the best advantage, as best illustrated inthe accompanying drawings.

These and other incidental objects Will be apparent in the drawings,specification and claims.

Referring to the drawings:

Figure 1 is a plan view of our new and improved boom being operated by ausual boom operating machine. In this view the truck is located at oneside of the machine and the log is being lifted at an angle to thecenter line of the boom.

Figure 2 is a side View of our new and improved boom and hoistingmachine, lifting a log and loeating it over the truck bunks. The tracksof the boom operating machine and the truck in this view are locatedparallel to one another, the boom having been swung to the position overthe truck.

Figure 3 is a sectional view of our new and improved boom, taken on line33 of Figure 2.

Referring more specifically to the drawings:

Our new and improved boom consists of a pair of uprights l and 2,mounted to the base 3 of the hoisting machine 4 at 5. These uprights areheld in a vertical position bythe braces 6, which in turn are supportedby the uprights 8 within the machine 4 and to the base of the same. Thebraces 6 and uprights 8 are further braced by the braces 9, which may besecured to the base 3 of the machine, or in this case to the frameworkIn of the hoist ll.

'ATENT OFFICE Pivotally mounted at I2 to the uprights I and 2 areextensions or uprights l3, which are held in a fixed position by thebraces it. The uprights I3 are adapted to fold down over the machinewhile transporting the same about. By disconnecting the braces M fromeither of their ends I5 or iii, the uprights will lay down over the topof the machine.

Our new and improved boom assembly i7 is pivotally mounted to theuprights l and 2 at HA and operates in a relatively horizontal position.The boom ll consists of A-frame members l8 having a block I!) fixedlysecured to their ends 26. This block is adapted to receive the liftingcable 2! leading to the hoisting drum 22 of the hoist I i. Secured inthe usual manner to the lifting cable 2| is the lifting tongs 23 forlifting the log 26. The outer end of the boom [1 is supported by thecable 25 operating over a sheave 26 which is mounted to the upper endsof the uprights l3 by way of the cross shaft 21, the cable 25 beingwrapped about the drum 28 in the usual manner.

Transverse beams 29 are welded within the A- frames [8, best illustratedin Figure 3. Running longitudinally of the boom and secured to the saidbeams are channels 30 having their legs extending downwardly and adaptedto engage the end 3| of the log 24, preventing the said log fromslipping sidewise.

By constructing an abutment rack 34 consisting of the rails 30 andtransverse beams 29 covering a relatively large area, logs can be pickedup at various angles to the center line of the boom facilitating placingthem on the bunks of the trucks.

We have found that a most satisfactory position of the hoisting machinein regards to the truck is that illustrated in the drawings, although wedo not wish to be limited to this operating position, as our inventionis well adapted to handle logs at various working angles to the boom.

Vertical bumper rails 32 are secured to the front sides of the uprightbeams I and 2 by the transverse beams 33. These bumper rails prevent theend of the log damaging the hoisting machine, and at the same timeassists in the positioning of the butt 3| of the log under the abutmentrack 3 What is claimed is:

1. A portable log handling apparatus including a base, a pair of spacedapart uprights fixedly mounted on said base, guard members extendingbetween said uprights, brace means holding said uprights in verticalposition, a boom pivoted to the upper end portions of said uprights, anda relatively wide log abutment frame carried by the lower side of saidboom whereby to provide means for heeling a log when said boom isdisposed at an angle relative to said 10g.

2. A portable log handling apparatus including a base, a pair of spacedapart uprights fixedly mounted on said base, guard members extendingbetween said uprights, brace mean-s holding said uprights in verticalposition, a boom pivoted to the upper end portions of said uprights, arelatively wide log abutment frame carried by the lower side of saidboom whereby to provide means for heeling a log when said boom isdisposed at an angle relative to said log, a pair of pivoted extensionson said uprights, and brace means re- 15 leasably connected between saidpivoted uprights and said base.

CHARLES HAMILTON SPARKS. FRANK C. TURNER.

REFERENCES CITED The following'references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,551,225 Tsigris Aug. 25, 19252,178,470 Coats Oct. 31, 1939 2,327,015 Carlson Aug. 17, 1943 2,527,036Schroeder Oct. 24, 1950

